53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
/*
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* Copyright (c) 2006-2023, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-05-07 aozima the first version
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* 2018-11-16 Ernest Chen add finsh command and update adc function
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* 2022-05-11 Stanley Lwin add finsh voltage conversion command
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*/
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#ifndef __ADC_H__
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#define __ADC_H__
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#include <rtthread.h>
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#define RT_ADC_INTERN_CH_TEMPER (-1)
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#define RT_ADC_INTERN_CH_VREF (-2)
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#define RT_ADC_INTERN_CH_VBAT (-3)
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struct rt_adc_device;
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struct rt_adc_ops
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{
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rt_err_t (*enabled)(struct rt_adc_device *device, rt_int8_t channel, rt_bool_t enabled);
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rt_err_t (*convert)(struct rt_adc_device *device, rt_int8_t channel, rt_uint32_t *value);
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rt_uint8_t (*get_resolution)(struct rt_adc_device *device);
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rt_int16_t (*get_vref) (struct rt_adc_device *device);
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};
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struct rt_adc_device
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{
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struct rt_device parent;
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const struct rt_adc_ops *ops;
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};
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typedef struct rt_adc_device *rt_adc_device_t;
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typedef enum
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{
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RT_ADC_CMD_ENABLE = RT_DEVICE_CTRL_BASE(ADC) + 1,
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RT_ADC_CMD_DISABLE = RT_DEVICE_CTRL_BASE(ADC) + 2,
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RT_ADC_CMD_GET_RESOLUTION = RT_DEVICE_CTRL_BASE(ADC) + 3, /* get the resolution in bits */
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RT_ADC_CMD_GET_VREF = RT_DEVICE_CTRL_BASE(ADC) + 4, /* get reference voltage */
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} rt_adc_cmd_t;
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rt_err_t rt_hw_adc_register(rt_adc_device_t adc,const char *name, const struct rt_adc_ops *ops, const void *user_data);
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rt_uint32_t rt_adc_read(rt_adc_device_t dev, rt_int8_t channel);
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rt_err_t rt_adc_enable(rt_adc_device_t dev, rt_int8_t channel);
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rt_err_t rt_adc_disable(rt_adc_device_t dev, rt_int8_t channel);
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rt_int16_t rt_adc_voltage(rt_adc_device_t dev, rt_int8_t channel);
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#endif /* __ADC_H__ */
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